Hagen Laguna PowerFlo 1000 External Filter

Laguna PowerFlo External Biological Filter 4500
is ideal for larger ponds up to 1000 US gallons or 4500 L. The filter features
an efficient 3-tiered filtering system that provides complete mechanical and
biological filtration. The top tray houses pumice filter material (included)
which provides mechanical and biological filtration. Below the top tray, a foam
pad (also included) performs mechanical filtration. The bottom tray is designed
to hold the biological media of your choice, such as Laguna BioMax(not
included). The trays have convenient handles which allow you to remove them
easily. Other features include a built-in drain plug and two outlets for
creating waterfalls or connecting to other pond equipment such as a UV
Sterilizer. The filter is designed to be installed outside the pond, which
allows easy access for maintenance. A Universal Click-Fit coupling for 3/4", 1"
and 1 1/4" inlet tubing is also included.